Dual-wavelength measurement system for absorbance chemical sensing

被引：5
作者：
Izquierdo, D. [1 ]
Puyol, M.
Salinas, I.
Alonso, R.
Alonso, J.
Dominguez, C.
Garces, I.
机构：
[1] Univ Zaragoza, Inst Invest Ingn Aragon, Grp Technol Foton, Zaragoza 50018, Spain
[2] Univ Autonoma Barcelona, Grp Senspres & Biosensores, Bellaterra 08193, Spain
[3] Ctr Nacl Microelect IMB CNM CSIC, Inst Microelect Barcelona, Bellaterra 08193, Spain
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2007年 / 18卷 / 11期
关键词：
dual-wavelength measurement; lock-in amplification; absorbance measurement; DSP; digital signal processor;
D O I：
10.1088/0957-0233/18/11/026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel compact dual-wavelength measurement system for absorbance chemical sensing incorporating digital lock-in amplifiers is reported. Its main innovation is the introduction of a reference wavelength to correct the possible non-specific optical changes of the system. The performance of the instrumentation has been tested on a laboratory setup and with integrated optical absorbance sensors.
引用
收藏
页码：3443 / 3450
页数：8
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